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公开(公告)号：USRE48996E1
公开(公告)日：2022-03-29
申请号：US15975608
申请日：2018-05-09
Applicant: Analog Devices, Inc.
Inventor： Shrenik Deliwala , Steven J. Decker , Gregory T. Koker , Dan M. Weinberg
Abstract: A current detection module capable of differentiating and quantifying contribution to a current signal generated by a sensor in response to stimulation by a certain target source from contributions from sources other than the target source (ambient sources) is disclosed. As long as the contribution from the target source comprises a pulsed signal, the module may synchronize itself to the pulse(s) so that there is a predetermined phase relationship between the pulse(s) and functions carried out by various stages of the module. The module may be re-used to also detect and quantify contributions from ambient sources by presenting these contributions to the module as pulses that trigger synchronization of the module. To that end, a detection system disclosed herein is based on the use of such current detection module and allows mode switching where, depending on the selected mode of operation, the module is configured to perform different measurements.
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Patent Agency Ranking
公开(公告)号：US20140323844A1
公开(公告)日：2014-10-30
申请号：US13870669
申请日：2013-04-25
Applicant: ANALOG DEVICES, INC.
Inventor： Shrenik Deliwala , Steven J. Decker , Dan M. Weinberg
CPC classification number: H01L31/02016 , A61B5/0059 , A61B5/02433 , A61B5/7225 , H01L31/02019 , H03F3/45 , H04B2210/003
Abstract: An electrical circuit includes a photodiode that receives a light signal from a light source and generates a photocurrent signal, a trans-impedance amplifier that amplifies the photocurrent signal and generates a low noise signal, and a high pass filter that converts the low noise signal into an alternating current (AC) signal having a positive amplitude, a negative amplitude, and a zero cross-over point between the positive amplitude and the negative amplitude. The electrical circuit also includes a positive integrating amplifier that receives the positive amplitude of the AC signal and generates a positive integrated value over an integration period, and a negative integrating amplifier that receives the negative amplitude of the AC signal and generates a negative integrated value over the integration period. The electrical circuit further includes at least one analog-to-digital converter that receives the positive and negative integrated values.
Abstract translation: 电路包括光电二极管，其从光源接收光信号并产生光电流信号，放大光电流信号并产生低噪声信号的跨阻放大器，以及将低噪声信号转换成 在正振幅和负振幅之间具有正振幅，负振幅和零交叉点的交流（AC）信号。 电路还包括正积分放大器，其接收AC信号的正幅度并在积分周期上产生正积分值，以及负积分放大器，其接收AC信号的负幅度并产生负积分值 整合期。 电路还包括至少一个模数转换器，其接收正积分值和负积分值。
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公开(公告)号：US09130070B2
公开(公告)日：2015-09-08
申请号：US13870669
申请日：2013-04-25
Applicant: ANALOG DEVICES, INC.
Inventor： Shrenik Deliwala , Steven J. Decker , Dan M. Weinberg
CPC classification number: H01L31/02016 , A61B5/0059 , A61B5/02433 , A61B5/7225 , H01L31/02019 , H03F3/45 , H04B2210/003
Abstract: An electrical circuit includes a photodiode that receives a light signal from a light source and generates a photocurrent signal, a trans-impedance amplifier that amplifies the photocurrent signal and generates a low noise signal, and a high pass filter that converts the low noise signal into an alternating current (AC) signal having a positive amplitude, a negative amplitude, and a zero cross-over point between the positive amplitude and the negative amplitude. The electrical circuit also includes a positive integrating amplifier that receives the positive amplitude of the AC signal and generates a positive integrated value over an integration period, and a negative integrating amplifier that receives the negative amplitude of the AC signal and generates a negative integrated value over the integration period. The electrical circuit further includes at least one analog-to-digital converter that receives the positive and negative integrated values.
Abstract translation: 电路包括光电二极管，其接收来自光源的光信号并产生光电流信号，放大光电流信号并产生低噪声信号的跨阻放大器，以及将低噪声信号转换成 在正振幅和负振幅之间具有正振幅，负振幅和零交叉点的交流（AC）信号。 电路还包括正积分放大器，其接收AC信号的正幅度并在积分周期上产生正积分值，以及负积分放大器，其接收AC信号的负幅度并产生负积分值 整合期。 电路还包括至少一个模数转换器，其接收正积分值和负积分值。
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公开(公告)号：US11994546B2
公开(公告)日：2024-05-28
申请号：US17746577
申请日：2022-05-17
Applicant: Analog Devices, Inc.
Inventor： Isaac Chase Novet , Steven J. Decker
IPC: G01R27/26
CPC classification number: G01R27/2629 , G01R27/2605
Abstract: An impedance sensing circuit includes three impedance elements and a sensing element arranged in a bridge configuration. A first input terminal is coupled to two of the impedance elements to apply a stimulus signal. In a mutual-sensing mode, a second input terminal is coupled to the third impedance element and the sensing impedance element to apply an opposite phase stimulus signal. The impedance sensing circuit may be configured in a self-sensing mode, in which the opposite phase stimulus signal is decoupled from the third impedance element and the sensing impedance element. At least one of the impedance elements is variable and may be adjusted to balance an offset impedance load on the sensing element.
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公开(公告)号：US10056868B2
公开(公告)日：2018-08-21
申请号：US14808083
申请日：2015-07-24
Applicant: ANALOG DEVICES, INC.
Inventor： Shrenik Deliwala , Steven J. Decker , Dan M. Weinberg
CPC classification number: H03F3/08 , A61B5/0059 , A61B5/02433 , A61B5/7225 , G01R27/26 , G01R27/2605 , G01R33/02 , G06F3/017 , H01L31/02019 , H03F3/087 , H03F3/45475 , H04B2210/003
Abstract: An electrical circuit includes a sensor configured to generate a current signal comprising a first portion comprising a contribution from a target source and/or a second portion comprising a contribution from sources other than the target source, a trans-impedance amplifier that amplifies the current signal and generate a low noise signal, and a high pass filter that converts the low noise signal into an AC signal having a positive amplitude, a negative amplitude, and a zero cross-over point between the positive and negative amplitudes. The circuit also includes a positive integrating amplifier that receives the positive amplitude of the AC signal and generates a positive integrated value over an integration period, and a negative integrating amplifier that receives the negative amplitude of the AC signal and generates a negative integrated value over the integration period. The circuit further includes at least one analog-to-digital converter that receives the integrated values.
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公开(公告)号：US09733275B2
公开(公告)日：2017-08-15
申请号：US14808148
申请日：2015-07-24
Applicant: ANALOG DEVICES, INC.
Inventor： Shrenik Deliwala , Steven J. Decker , Gregory T. Koker , Dan M. Weinberg
CPC classification number: G01R15/09 , A61B5/02427 , G01J1/44 , G01J2001/446 , G01R15/08 , G01R19/25
Abstract: A current detection module capable of differentiating and quantifying contribution to a current signal generated by a sensor in response to stimulation by a certain target source from contributions from sources other than the target source (ambient sources) is disclosed. As long as the contribution from the target source comprises a pulsed signal, the module may synchronize itself to the pulse(s) so that there is a predetermined phase relationship between the pulse(s) and functions carried out by various stages of the module. The module may be re-used to also detect and quantify contributions from ambient sources by presenting these contributions to the module as pulses that trigger synchronization of the module. To that end, a detection system disclosed herein is based on the use of such current detection module and allows mode switching where, depending on the selected mode of operation, the module is configured to perform different measurements.
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